finding the are of a regular decagon
what is the formula i forget
if one side is 3.6 x 10 x 5.54?

Question

finding the are of a regular decagon 
what is the formula i forget
if one side is 3.6 x 10 x 5.54?

anonymous · Answer

area**

anonymous · Answer

well deca - is the root for 10. So either it's already stated in the question when you multiply it by 10 or you take that entire equation and multiply it for the area. Although I dont know how you got the equations number sequence initially

anonymous · Answer

http://www.mathopenref.com/decagon.html & this site should help you a lot as well. + were is the fan I've been waiting for lol (:

anonymous · Answer

not quite sure how one side can be 3.6x10x5.54?

anonymous · Answer

10 is the number of sides a decagon has 5.54 is the apothem 3.6 is one side

anonymous · Answer

then the site drddave points out should help.  given the side and apothem info

anonymous · Answer

ok thank you

anonymous · Answer

this is the exact site to go to if you have the length of a side in which you said so and its the first equation at the top of the site. http://www.mathopenref.com/polygonregulararea.html